Children:

<18yrs: usually not recommended. See full labeling. Infuse over 60 mins. Switch to oral form when appropriate. 1–17yrs: Complicated UTIs or pyelonephritis: 6–10mg/kg (max 400mg) IV every 8hrs for 10–21 days (see full labeling). Postexposure prophylaxis of inhalational anthrax: 10mg/kg (max 400mg/dose) every 12hrs for 60 days (start as soon as possible after exposure). Treatment of inhalational, GI, cutaneous, or oropharyngeal anthrax: see CDC recommendations.